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双折射材料的温度修正 Birefringent Material Temperature Modification @)>9l& 7_WD)Y2yS 目前,FRED尚不支持“global”温度设置,温度敏感性评估一般用脚本编程来完成,该文档演示双折射材料的折射率随温度变化的问题。附件案例文件包括两个双折射材料模,“KDP”和 “KDP Baseline”, KDP Baseline材料存储在已知温度下的折射率,KDP材料用于储存在“current”温度下的折射率值,定义为与baseline material之间的温度差。一个嵌入的脚本名为“modifyBirefringentMaterialIndex” ,包含在FRED文件中,另外也单独附加。其实现过程如下: Z-RgN H|4O`I;~( 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline nf5Ld"|%9 n>tYeN)F< 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline .kSx>3 ZM/*cA!" 3.Loop over the baseline material samples and determine the number of wavelength entries ocCC63J P1b5=/}:V
4.Loop over each sampled wavelength entry in the baseline material e9;<9uX [q/=%8qLUA a.Modify the ordinary and extraordinary refractive index values using (2) above O|J`M2r GJ=<~S" b.Apply the modified values to the non-baseline material qALlMj--m +B$o8V 5.Set a description on the non-baseline material indicating the temperature change from baseline [kx_Izi/T UdmYS3zs 脚本编程及GUI例程请下载链接: (&4aebkZO /sf:.TpVh http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs ve2GRTO^aC 12*'rU;* http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd i DV.L Kd8V,teH =j]us?5 QQ:2987619807 lBS!=/7
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